Does MulticastSocket API start the multicast if it is disabled in Linux

Basically I am running a application which uses multicast in Linux environment.I am using MulticastSocket API to invoke my multicast.
Now SLES10 SP2 if I disable multicast using ifconfig eth0 -multicast also when call "MulticastSocket " API it is appearing to be starting the multicast.
Can any one confirm will MulticastSocket API start the multicast if it is not enabled.

Note: This thread was originally posted in the [Java Secure Socket Extension  (JSSE)|http://forums.sun.com/forum.jspa?forumID=2] forum, but moved to this forum for closer topic alignment.

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